When map service layers, such as Bing Maps or ArcGIS Online Basemaps, are drawn in ArcGIS Desktop applications (ArcMap, ArcCatalog, ArcReader) or ArcGIS Engine, multiple requests are made simultaneously and then tiles are drawn for the given extent. In situations where these requests take longer to respond, the requesting application can crash.
ArcGIS Desktop applications (ArcMap, ArcCatalog, ArcReader) or ArcGIS Engine can crash accessing a tiled internet service (such as Bing Maps or ArcGIS Online Basemaps) when the request for a map service times out. These crashes occurred more frequently at version 10.0 Service Pack 2.
Download and install the latest service pack for ArcGIS Desktop 10 from the ArcGIS Resource Center.